Engine - Long Crank Time or No Start After Fill Up

84chrysler6

Models


1981 thru 1984 2.6L Domestic Built Front Wheel Drive Passenger Cars - All Emission Markets


Subject


Long Crank Time or No Start After Filling Fuel Tank


Index


FUEL

Date

April 23, 1984


No..


14-27-84

P-1600-C
SYMPTOM/CONDITION

A customer may experience a condition of long crank time or no start soon after having filled the fuel tank.

This condition is the result of overfilling the fuel tank (i.e., nursing the tank full).

When tank is overfilled liquid fuel will enter the vapor canister through the fuel tank vent line, thereby filling the vapor canister with liquid fuel to a level that prevents the canister from accepting carburetor bowl vent vapors. This forces fuel out of the float bowl into the intake manifold causing flooding and an over rich condition during hot restart cranking, which may lead to excessively long crank times or even a no start condition.

To prevent this condition from occurring again, it is important that the customer be advised to avoid overfilling the fuel tank (nursing it full). The correct filling procedure is to stop adding fuel after the first two automatic shutoffs of the fuel nozzle.


REPAIR PROCEDURE

1. Disconnect the bowl vent hose at the connector near the carburetor.

2. Hold the throttle wide open and crank engine until it starts.

3. Reconnect the bowl vent hose and drive vehicle immediately (do not turn engine off or flooding will reoccur) for 10-15 minutes. This will allow the canister to absorb the liquid fuel and the vapors to be purged by the engine. The canister will return to normal vapor venting unless fuel tank is overfilled again.
4. If the condition persists, the main canister (black in color) will have to be removed from the vehicle and the excess fuel dumped out.


POLICY: Information only